[Ocfs2-devel] [PATCH 25/29] ocfs2: Implementation of local and global quota file handling
Joel Becker
Joel.Becker at oracle.com
Wed Oct 29 03:51:39 PDT 2008
On Wed, Oct 29, 2008 at 03:29:02AM +0100, Jan Kara wrote:
> > > +/* Structure with global user / group information. We reserve some space
> > > + * for future use. */
> > > +struct ocfs2_global_disk_dqblk {
> > > +/*00*/ __le32 dqb_id; /* ID the structure belongs to */
> > > + __le32 dqb_use_count; /* Number of nodes having reference to this structure */
> > > + __le64 dqb_ihardlimit; /* absolute limit on allocated inodes */
> > > +/*10*/ __le64 dqb_isoftlimit; /* preferred inode limit */
> > > + __le64 dqb_curinodes; /* current # allocated inodes */
> > > +/*20*/ __le64 dqb_bhardlimit; /* absolute limit on disk space */
> > > + __le64 dqb_bsoftlimit; /* preferred limit on disk space */
> > > +/*30*/ __le64 dqb_curspace; /* current space occupied */
> > > + __le64 dqb_btime; /* time limit for excessive disk use */
> > > +/*40*/ __le64 dqb_itime; /* time limit for excessive inode use */
> > > + __le64 dqb_pad1;
> > > +/*50*/ __le64 dqb_pad2;
> > > +};
> >
> > We also need space for the ecc data here. It looks like ecc
> > space wasn't added to this series. Rather than comment on each
> > structure, just let me know when that's ready.
> What I did is, that in the end of each quotafile block there are 8 bytes
> reserved for OCFS2 use (both in local and global quota files). So these
> bytes are intended to be used for ECC. I hope that's fine.
So every block type (disk header, dq_block, etc) has the last 8
bytes free? This seems like something we should find a way to mention
in the disk header.
Joel
--
Bram's Law:
The easier a piece of software is to write, the worse it's
implemented in practice.
Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127
More information about the Ocfs2-devel
mailing list